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All Journal VALENSI SAINS DAN MATEMATIKA JURNAL KIMIA SAINS DAN APLIKASI Jurnal Sains Dasar Bulletin of Chemical Reaction Engineering & Catalysis Elkawnie Indonesian Journal of Chemistry ASEAN Journal of Chemical Engineering Jurnal Abdimas Perbanas Greensphere: Journal of Environmental Chemistry Bulletin of Chemical Reaction Engineering & Catalysis JURNAL REKAYASA KIMIA & LINGKUNGAN Jurnal Wicara Desa

Adi Darmawan

Chemistry Department, Faculty Of Sciences And Mathematics, Diponegoro University, Jl. Prof. Soedarto, SH., Tembalang, Semarang|Diponegoro University|Indonesia

Author-ID : 249994

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Languange, Linguistic, Communication & Media Mathematics Public Health Social Sciences

Published : 36 Documents Claim Missing Document

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Lempung Terpilar Silika untuk Penghilangan Fenol dalam Air Adi Darmawan; Choiril Azmiyawati; Pulojuliadi Nababan
Jurnal Kimia Sains dan Aplikasi Vol 10, No 2 (2007): Volume 10 Issue 2 Year 2007
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Limbah fenol dapat mencemari lingkungan, namun pengolahan limbah fenol masih memiliki banyak kendala. Kendala disebabkan proses pengolahan yang menggunakan prinsip flokulasi dan koagulasi dengan biaya instalasi dan operasional yang mahal. Menanggapi kendala tersebut lempung terpilar SiO2 mampu digunakan sebagai katalis oksidasi fenol dalam air limbah.Lempung terpilar SiO2 memiliki basal spacing, luas permukaan besar, dan stabil pada temperatur tinggi. Sintesis lempung terpilar SiO2 melalui proses interkalasi TEOS (tetraetilortosilikat) dan surfaktan dodesilamin pada daerah antarlapis lempung. Lempung terpilar SiO2 diimpregnasi dengan menggunakan logam nikel. Proses sintesis lempung terpilar SiO2 dikarakterisasi menggunakan metode difraktometer sinar X dalam menentukan kenaikan basal spacing dan kristalinitas. Penentuan aktivitas katalis lempung terpilar SiO2/Ni terhadap konversi oksidasi fenol dalam air limbah menggunakan spektrofotometri UV-Visible.Lempung terpilar tanpa kalsinasi mengasilkan basal spacing 28,55 Å sedangkan lempung terpilar SiO2 kalsinasi 600 OC menghasilkan basal spacing 27,77 Å. Aplikasi lempung terpilar SiO2/Ni sebagai katalis oksidasi fenol dalam air limbah mampu mengkonversi limbah fenol hingga mencapai 70 %. Aktivitas katalis SiO2 optimalisasi pada konsentrasi nikel yang teremban 4 %, dimana semakin banyak nikel yang teremban pada lempung terpilar SiO2 maka aktivitas katalisisnya semakin meningkat

Pelatihan Online Content Marketing dan Desain Bagi Pemula Dengan Menggunakan Aplikasi Canva Adi Darmawan; Laksamana, Patria; Saripudin; Suharyanto
Jurnal Abdimas Perbanas Vol. 3 No. 1 (2022): Jurnal Abdimas Perbanas
Publisher : Perbanas Institute

Graphic design and marketing content are two important things in both conventional and digital marketing activities. A good quality of design and content is needed, not only from the aspect of content, design and visual appearance, but also to several other aspects, namely concepts, trends, market segments, costs, and including the applications used. The Canva Graphic Design application is one of the option that can be used for beginners because it has a number of advantages and is easy to operate. In addition, it is also necessary to properly understand the communication aspect so that the content and designs created can be easily accepted and recognized by the public, as well as the legal aspects in order to avoid potential legal problems that may arise as a result of violating the provisions of the Act within the scope of Intellectual Property Rights (IPR). This training is expected to improve the skills and abilities of the participants, especially beginners, to be more creative and innovative in producing good quality content marketing and designs in a relatively easy, fast and inexpensive way. In addition, in general, it is also expected to increase the creative economy business in Indonesia. Keywords: Content Marketing, Design Grafis, Branding

Pembuatan Nanosilika dari Abu Sekam Padi pada Variasi pH Sol Gel Evan, Evan; Pardoyo, Pardoyo; Darmawan, Adi
Greensphere: Journal of Environmental Chemistry Vol 2, No 1 (2022): Volume 2 Issue 1 Tahun 2022
Publisher : Universitas Diponegoro

Telah dilakukan penelitian tentang pengaruh variasi pH sol gel terhadap karakter nanosilika yang disintesis dari abu sekam padi. Tujuan penelitian untuk memperoleh silika berukuran nano dari abu sekam padi, menentukan pengaruh variasi pH sol gel terhadap nanosilika yang dihasilkan serta pH optimum dalam pembentukan nanosilika. Metode yang dilakukan meliputi ekstraksi silika dan sintesis nanosilika dengan variasi pH sol gel pada pH 9, pH 7, dan pH 5. Produk sintesis dikarakterisasi menggunakan XRD, FTIR, dan SEM-EDX. Hasil menunjukkan nanosilika yang diperoleh berbentuk amorf dengan ukuran morfologi permukaan 40 nm sampai 100 nm pada pH 5 dan pH 9, serta 40 nm sampai 85 nm pada pH 7. Gugus Si-O-Si dan Si-OH ditemukan pada beberapa bilangan gelombang spesifik. Rasio gugus Si-OH/Si-O-Si untuk pH 5, pH 7, dan pH 9 masing-masing sebesar 4,18, 5,36, dan 3,96. pH optimum dalam pembentukan nanosilika didapatkan pada pH 7, jumlah produk terbanyak diperoleh pada pH 5 sedangkan kandungan Si terbanyak pada pH 9.

Organo-Silica Membrane Prepared from TEOS-TEVS Modified with Organic-Acid Catalyst for Brackish Water Desalination Muthia Elma; Aptar Eka Lestari; Anna Sumardi; Zaini Lambri Assyaifi; Adi Darmawan; Dwi Rasy Mujiyanti; Isna Syauqiah; Aulia Rahma; Linda Suciwati; Yanti Mawaddah
Jurnal Rekayasa Kimia & Lingkungan Vol 16, No 1 (2021): Jurnal Rekayasa Kimia & Lingkungan (June, 2021)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v16i2.18107

The sol gel process is one of the processes used in the manufacture of thin films on membranes because it can control the pore size in the resulting silica matrix. In addition, another way to build membrane size can be done by adding catalysts and precursors to be used. In this study, using a combination of tetraethyl ortho silicate (TEOS) and triethoxy vinyl silane (TEVS) precursors and citric acid as a catalyst to produce a silica matrix with mesoporous size so that it is suitable for application in the desalination process. The organo silica membrane was calcined at 350 C for 1 hour using the RTP calcination technique under vacuum, thus preventing the decomposition of carbon in the silica matrix. The membrane was dipcoated 4 times to obtain 4 layers. The FTIR (Fourier-transform Infrared Spectroscopy) test was carried out to see the functional groups on xerogel, namely silanol, siloxane and carbon. In addition, the performance of this membrane is carried out by desalination through pervaporation using 0.3% NaCl feed water with variations in feed air temperature, namely 25, 40and 60. The resulting flux of air value increased with increasing feed water temperature, namely 6.1; 11.2; and 12.1kg.m-2h-1while the resulting salt rejection was 99.72; 99.64 and 99.23%. So that the organo silica membrane is suitable when applied to the desalination process through pervaporation.

Uji Aktivitas Fotokatalis Genteng Berglasir Silika/TiO2 terhadap Degradasi Larutan Indigo Carmine, Metanil Yellow dan Rhodamin Maranti Sianita; Adi Darmawan; Choiril Azmiyawati
Jurnal Kimia Sains dan Aplikasi Vol 20, No 2 (2017): Volume 20 Issue 2 Year 2017
Publisher : Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University

Pencampuran silika dan TiO2 dan penggunaan sebagai katalis telah diteliti. Tujuan dari penelitian ini adalah pengujian aktivitas fotokatalitik dari atap glasir silika/TiO2 untuk mendegradasi zat warna, seperti indigo carmine, rhodamin dan methyl yellow. Glasir dibuat dengan mencampur abu soda, boraks, serbuk kaca yang dikenal sebagai sumber silika dan TiO2 yang difungsikan sebagai fotokatalis. Pembakaran dilakukan dua kali pada 900°C. Aktivitas fotokatalis dari glasir yang dihasilkan dilakukan dengan uji kinerja degradasi menggunakan tiga pewarna berbeda. Pewarna dialirkan pada permukaan glasir silika / TiO2 selama 1, 2, 3, dan 4 jam. Perubahan konsentrasi zat warna diukur dengan spektrofotometer UV-VIS. Hasil penelitian menunjukkan produksi glasir genteng dapat dilakukan dengan menambahkan campuran TiO2 pada glasir. Hasil fotokatalitik menunjukkan degradasi indigo carmine adalah 74,58%, methanyl yellow 16,08% dan rhodamin 47,56%.

PEMBUATAN TEH HERBAL DARI DAUN KELOR (Moringa oleifera) UNTUK MENINGKATKAN KESEHATAN TUBUH Hakim, Muhamad Shaufil; Sari, Ainayya Amalia; Al Aqad, Yuniar Rizki Rahmawati; Amara, Nadya; Putri, Aida Musyarrifah Hasri; Putra, Muhammad Septian Dwi; Sani, Nabila Aulia; Khaerunnisa, Khaerunnisa; Darmawan, Adi; Susanto, Oki Novian; Rosmaliati, Rosmaliati
Jurnal Wicara Vol 1 No 5 (2023): Jurnal Wicara Desa
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/wicara.v1i4.3396

Moringa is a type of plant that belongs to the Moringaceae family. This plant is also known as (Moringa oleifera). Moringa has many uses and has long been used by various cultures because various parts of this plant have high nutritional value and health properties that are considered beneficial. Some parts of the Moringa plant that are commonly used are the leaves, fruit, flowers, seeds, and roots. Moringa (Moringa Oleifera) originates from India and Arabia and then spreads to various regions. years, and withstand extreme heat conditions. This plant comes from tropical and subtropical regions of South Asia. In Indonesia, Moringa trees are widely planted as living fences, planted along fields or on the edges of rice fields, functioning as green plants. In addition, the Moringa plant is also known as a nutritious medicinal plant by utilizing all parts of the Moringa plant, starting from the leaves, bark, seeds, to the roots. This plant has been studied for its health benefits, has antifungal, antioxidant, antibacterial, anti-inflammatory, diuretic, and as a hepatoprotector. According to Folid, Moringa leaves can be consumed as a vegetable, consumed in the form of Moringa leaf tea, flour, powder or Moringa leaf capsules. Moringa leaf tea is a caffeine-free herbal tea which is very good for health and has a pretty good taste. Moringa leaf tea contains many nutrients that can increase the body's metabolism. Tea is a drink prepared by soaking the leaves or certain parts of the tea plant (Camellia sinensis) in hot water. This tea plant is the main source for various types of tea known throughout the world. There are several main types of tea that are produced from the Camellia sinensis tea plant, and these differences are mainly derived from the processing of the tea leaves.

Co-Authors . Widayat Agus Subagio Ahmad Kusumaatmaja Ahmad Suseno Al Aqad, Yuniar Rizki Rahmawati Amara, Nadya Amaryllis Kartika Ratri Andrew Pradana Putra Anna Sumardi Anna Sumardi Aptar Eka Lestari Aptar Eka Lestari Ari Kurniawan Artha Monica Andini Aulia Rahma Aulia Zahra Ekaningsih Azwar Thaib Brainy Happy Ana Tasiman Brigita Maria Listyani Choiril Azmiyawati Cut Rahmawati Dian Anggraini Dimas Buntarto Doddy Bestyan Dwi Rasy Mujiyanti Endang Sawitri Erdina Lulu Atika Rampun Evan Evan Faradina Azahra Zaqia Febio Dalanta Gunawan Gunawan Hakim, Muhamad Shaufil Hanifa Zakiyatul Urbach Hendri Widyandari Heru Susanto Indriana Kartini Isna Syauqiah Isna Syauqiah Khaerunnisa Khaerunnisa, Khaerunnisa Kristinawati, Leny Laksamana, Patria Lathifah Puji Hastuti Lia Handayani Lia Handayani Linda Selvianingrum Linda Suci Wati Linda Suciwati Linda Suyati Listiana Listiana Lusiana, RA. Maranti Sianita Marta Chandra Anikke Putri Muslimin Muthia Elma Nanik Sulistyowati Nurhayati Nurhayati Nurhayati Nurhayati Oktaffi Arina Manasikana P Siahaan Pardoyo Pardoyo Pulojuliadi Nababan Purnomo, Slamet Agus Putra, Muhammad Septian Dwi Putri, Aida Musyarrifah Hasri Rina Nurianingsih Rosmaliati, Rosmaliati Sani, Nabila Aulia Sari, Ainayya Amalia Saripudin Saripudin Silviana Silviana Sriatun Sriatun Sriyanti Sriyanti Suhartana Suhartana Suharyanto Susanto, Oki Novian Trie Nanda Mulyana Wasino Hadi Rahmanto Yanti Mawaddah Yanti Mawaddah Yayuk Astuti Zaini Lambri Assyaifi Zaini Lambri Assyaifi

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